Insulated metallic cross-tie.



AW'. 4J'. STOP. `INSULA'I'IED METALLIC GROSS TIE. APPLIGATIONHLED1:30.19. 1907.

924,400. l Patented June 8,1909.

l W.4J'. stroop. INSULATBD 4 METALLIC 013.0558 TIB. APPLICATION FILEDDRL-19, 190i.

924,400, Patented June s, ,1909. s sums-SHEET' 2. FIG.\3

wrm asses. I mvEN-ron.

1HE Noma/s PErERs cazJwAsmHaTaN, D. c.

UNITE@ STATES PIENYI IFIQE,

WILLIAM J. SIOOP, OF PITTSBURG, PENNSYLVANIA.

INSULATED METALLIC CRGSS-TIE.

To all whom it may concern:

Be it known that I, WILLIAM J. Sroor, a resident of Pittsburg, in thecounty of Allegheny and State of Pennsylvania, have invented certain newand useful Improvements in Insulated Metallic Cross-Ties, of which thefollowing is a specification.

This invention relates to an insulated metallic cross-tie, and whilemany of its novel features are adapted for use with metallic tiesgenerally, the invention is designed primarily for insulatingtheparticular form of tie and rail fastening shown and described herein butclaimed in an application liiled concurrently herewith, Serial No.407,166.

Oneobject of the invention is to so construct and arrange the bearingand insulating plates that they may be readily and conveniently removedand replaced. And a further purpose is to so arrange said plates as tocoperate with the rail fastenings without interfering with themanipulation of the latter.

Still another object is to adapt the bearing and insulating plates tothe improved cross-tie, whereby the lateral thrust of the rails istransmitted to the tie flanges even though said parts are insulated fromeach other, this without exposing the rail fastenings to such thrust,thereby relieving the fastenings of destructive shearing strains.

In the accompanying` drawings, Figure 1 is a top plan view of portionsof a tie and rail equipped with the improvements, and Fig. 2

is a side elevation of the tie with the rail shown in section. Fig. 3 isa cross sectional view of the tie and fastenings, the rail being shownin elevation. Figs. 4 and 5 are detail views of the insulating andbearing plates.

The metallic cross-tie here shown, and the one to Which the invention ispreferably applied, is of modified Lbearn form, 2 designating theilanged base thereof, 3 the web, and 4 the top portion which sup portsthe insulated rails 5 of a railway track. The tie is rolled or otherwiseformed with the laterally separated upward flanges 6 on the longitudinaledges of its top face,` and these flanges are interrupted to receive thebase of the rail, the extremities 7 forming thrust-receiving abutmentsfor the opposite sides of the rail base. l, p

8 is the insulating plate, formed preferably of vulcanized fiber, whichfits the top surface of the tie at the flange interruptions andSpecification of Letters Patent.

Application filed December 19, 1907.

ysage 10 and a square bolt passage 11.

Patented June 8, 1909.

Serial No. 407,167.

extends into the latter, thus covering the tie from one edge to theother in the line of the rail. rlhe opposite ends of the insulatingplate are extended at 9 to lit between flanges 6, and each of theseextensions is preferably formed with a circular bolt pas- Theextremities of those portions of the insulating plate extending into theinterruptions of anges 6 are turned upward at 12 to bear against theflange extremities or abutments 7.

rihe metallic bearing )late 13 has the same outline as the insulatingplate upon which it rests, only that the opposite side portions areenough shorter than the corresponding parts of the insulating plate toiit between the upturned portions 12 of the latter, the bearing platehaving similar upward lugs engaging parts 12, with lugs 14 spaced apartat eachrside to receive the base of a rail. rIhe end extensions 15 ofthe bearing plate have the circular and square bolt passages 16 and 17which register with corresponding passages 10 and 11 of the insulatingplate.

The bearing and insulating plates are secured to top portion 4 of thetie by headed bolts 18 extending through openings 10 and 16 and throughbolt passages in top 4, said openings and passages being enough largerthan the bolt to admit the sleeve-like i11- sulating washer 19, thuscompletely insulating the bolt from the metallic bearing late. 'l hepreferred securing means for the bolt consists of the tapered key 20extending through slot 21 of the bolt, the slot being of such lengththat its upper end is above the under face 22 of top portion 4 of thetie, so that when the key is driven in it has a wedging raction betweensaid under face and the lower end of the bolt slot and tightly holds thebolt. he smaller end of the key is slit horizontally at 23, and afterbeing inserted the portion 24 beneath the slit is bent laterally.

Each of the hook-bolts 25 which hold down the rail extends through theplate openings 11, 17 and through square passages in to 4 with a lockingkey 26 like key 20 entere in the slot thereof. The upper edge of the keybears against the plate-like metallic washer 27, while interposedbetween the latter and the under face 22 of part 4 is the insulatingWasher 28.' An insulating washer 29 surrounds the bolt within thepassage through top portion 4, andthis with insulating plate S above andinsulating washer 28 below, holds the bolt out of contact with the metalof the tie.

Each of the hook bolts is preferably shouldered at 30 to bear on the topsurface of plate 13, the shoulder being preferably formed on three sidesof the bolt, the side without a shoulder being next to the rail base.With the upper end of the bolt slot extending into the plane of washer27, the key has a wedging action and draws shoulder 30 into tightengagement with the bearing plate. ln practice, it is not desirable tohave the hook bolt bear downward so tightly on the rail base as toendanger the fastening by the expansion and contraction of the rail.Therefore, shoulder 30 is so spaced from the bolt head as to cause thelatter to merely engage the rail base without exerting undue pressurethereon. In fact, the construction may be such as to afford a veryslight clearance between the hook and the rail.

All of the lateral thrust of the rail is imparted to and resisted by thetop anges 6, thus completely protecting the look bolts, leaving to themthe one function of holding 4down the rail. The depth of flanges 6 ispreferably equal to the combined thickness of the insulating and bearingplates and the edge of the rail base. Angle plates 30 may be secured tothe opposite faces of web 3 to form wings which project laterally intothe ballast and prevent the tie from walking therein.

l claim 1. The combination of a metallic tie, a metallic bearing plate,an insulating plate between the tie and bearing plate, plate fasteningdevices extending through the plates and the upper portion of the tie,insulation separating said devices from the bearing plate, holding meansfor the lower ends of said devices, rail fastening' devices engaging thebearing plate and extending through the plates and the top portion ofthe tie, holding means at the lower ends of the rail fastenin devices,and insulation separating the ra fastening devices and the1r holdingmeans from the tie.

2. The combination of a metallic tie, a bearing plate, an insulatingplate interposed between the tie and bearing plate, securing devices forthe plates extending therethrough and through the top portion of thetie, and rail fastening devices also extending through both plates andthrough the top portion of the tie and secured to the latter.

3. The combination of a metallic tie, a bearing plate, an insulatingplate interposed between the tie and bearing plate, plate fasteningdevices extending through both plates and through the top portion of thetie with securing means for said devices engaging the under face of saidtop portion, and rail fastening devices extending through both platesand through the top portion of the tie and secured at the under face ofthe latter.

4. The combination of a metallic tie, a metallic bearing plate, aninsulating plate between the tie and the bearing plate, plate fasteningdevices headed at their upper ends and extending downwardly through bothplates and through the top portion of the tie with detachable holdingmeans for said devices at the under face of the top portion of the tie,and rail fastening hook-bolts extending downwardly through both platesand through the top portion of the tie with holding means for the boltsat the under fare of said top portion.

5. The combination of a metallic tie, a bearing plate, an insulatingplate interposed between the tie and bearing plate, a rail fasteningdevice extending through the upper portion of the tie, holding means forthe lastening device beneath said top portion, and insulation interposedbetween the holdingl means and the top portion of the tie.

6. The combination of a metallic tie, a bearing plate insulated from thetie, a rail fastening device having a slotted shank cxtending throughthe top portion of the tie, a washer for the shank, an insulating platebetween the washer and the under face of the top portion of the tie, anda key in the slot of the fastener shank and bearing upwardly againstsaid washer.

7. The combination of a metallic tie having flanges on its top surfaceseparated to admit and form abutments for opposite sides of a rail base,an insulating plate on the top face of the tie at said interruptions andextending between the flanges with raised insulation separating thetieflanges from the rail base, a bearing plate on top of the insulatingplate, and securing means.

8. The combination of a metallic tie having laterally separatedlongitudinal flanges on its top face, the flanges interrupted to receivea rail, an insulating plate on top ofthe tie and extending into saidinterruptions with extensions at either end of the plate lying betweenthe laterally separated flanges,

a bearing plate on top of the insulating plate, and fastening devicesextending through the insulating and bearing plates for fastening theplates to the tie.

9. The combination of a metallic tic having laterally separatedlongitudinal flangesraised from its top surface, the flanges beinginterrupted to admit a rail base, an insulating plate fitting the topof' the tie at said interruptions and extending into the latter,

the insulating plate having raised portions in line with the tieflanges, a bearing plate on top and of substantially the same outline asthe insulating plate, the bearing plate having raised lugs in line withthe tie flanges and the raised portions of the insulating plates fortransmitting the lateral thrust of the rail to the tie flanges, andsecuring means.

10. The combination of a metallic tie having laterally separatedlongitudinal flanges raised from its top surface, the flanges beinginterrupted to admit a rail base7 an insulating plate fitting the topface of the tie at the interruptions and extending into the latter, theplate having extensions at either end lying between the laterallyseparated flanges, the plate having raised portions in line with andengaging the flanges, a bearing plate on top of and of substantially thesame outline as the insulating plate with raised lugs on the bea-ringplate in line with the raised portions of the insulating plate and withthe tie flanges, and fastening devices for the plates passing throughthe end extensions of the a latter.

,g; the top surface of the tie at said interruptions and extending intothe latter, the plate having raised portions in line with the flangesand also having extended end portions lying between the flanges7 abearing plate of substantially the same outline as the insulating platewith raised lugs in line with the raised portions of the insulatingplate and with the tie flanges, headed bolts extending downwardlythrough both plates and through the top portion of the tie and securedat the under face o'l` the latter, and rail securing hookbolts extendingdownwardly through the end extensions of both plates and through the topportion of the tie with means beneath the latter for securing the bolts.

l2. As an article of manufacture, an insulating plate for metallic tiesformed with separated raised portions at opposite sides thereof and withend portions extended beyond the raised portions with apertures intheend portions.

13. A s an article of manufacture, a metallic bearing plate forinsulated cross ties formed with separated raised portions at theopposite sides thereof and with end portions extended beyond the raisedportions with apertures in the said end portions.

In testimony whereof I affix my signature in presence of two witnesses.

WILLIAM J. STOOP.

Witnesses:

JOE NEsBrr, ALEX. S. MABON.

CAD

